Lubricator.



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SAMUEL C. CUTLER AND WILLIAM H. BROWN, OF CLEVELAND, 01-110..

LUQRICATOR.

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Specification of Letters Patent.

Patented June 2%, 1913.

Application filed Qctober 4, 1910. Serial No. 585,215;

To all whom it may concern I Be it known that we, SAMUEL C. CUTLER and \VILLIAM BnowN, citizens of the United States, residents of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement. in

Lubricators, of which the following is a specification, the principle of the invention being herein explalned and the best mode in which we have, contemplated applying that whichshall combine a more generally etti cient construction with agreater facility of operation,and at the same time be simple and correspondingly cheap of manufacture. The said invention consists of means which are hereinafter fully described and particularly set forth in the claims.

T he annexed drawing and. the following description set forth in detail certain mechanism embodying our invention, the disclosed means, however. constituting but part of various mechanical forms in-which the principle of our invention may be employed.

In said annexed drawings :-Figure 1 is the simplestembodiment of our invention, shown in vertical section. Fig. 2 1s a similar view of a slight modification thereof.-

Fig. 3 is a horizontal section of a further modification, and F g. at is a vertical axial section of same. Fig. 5 1s a fra Our lubricator comprises as one of the main members the usualhollowed cylindrical stem A, exteriorly threaded atits'lower end, as shown at at, by means of which it may be screwed into any member to which the lubricant is to-be supplied. The upper portion of this stem is funnel-shaped, as shown ata and exteriorly screw-threaded at the upper end thereof, as indicated by a A cap member B, also preferably of cylindrical form, to constitute an inverted cup, and with an interior thread Z) throughout the greater part of its length, is adapted to screw upon the stem member and form jointly with it an interior space. As will now be apparent, the stem and cap members may be moved-relatively to each other, so

cant into the interior space.

entary" elevation of still another modified orm;

as to restrict or enlarge such space and bring pressure to bear upon the-lubricant contained therein. The upper circumference of the cap member may be knurled, as represented at if, for the obvious purpose of making the turning of the one member upon the other more easy. On the upper surface of this cap member is a slot Z) into which a screw driver may be inserted, and whereby the cap member may be turned when not accessible by hand. The cap member 13 is provided near the bottom with an inlet duct 7/, the purpose of which will hereinafter more clearly appear. One or more small lips are also formed around the bottom of the. cap member, and may be bent or inclined inwardly to prevent the entire separation of the cap and stem member.

The operation of the lubricator is exceedingly simple. The cap is first unscrewed as far as the lips Z) will permit, exposing the opening 71*, as clearly shown in F 1g. 1.

Thereafter, any lubricant may be forcedthrough the opening 6 and into the space formed between the id stem and cap members, until the same is full or substantially so. When, for all general purposes, a heavy lubricant is best suited, as in the case of automobile usage, a grease-gun is employed for the forceful introduction of the lubri- Thereafter, as will be apparent to those skilledin the art, the mere turning of the cap member, either with the fingers or by other means, as previously suggested, will serve to bring the necessary pressure to bear upon the lubricant, in order to force it down throughthe hollow stem member, as intended. it will be observed that after a very few turns of the cap member upon its thread, the openinglf will be automatically closed, to remain so untilthe cap member is unscrewed for the purpose of filling the lubricator. It should be noted also that our invention procludes the necessity of entirely removing the 'the'upper part of the stem A and the cap member. B, whereby the tendency of the cap member to loosen and unscrew 1s resisted to slip out of the opening. Thereafter, the sleeve may be slipped around sufiiciently to expose the opening, and permit of a recharge of lubricant. One or more lips g are also best provided at the lower eiilge of this sleeve. for a similar purpose, as best shown in Fig. 4-.

The modification represented in Fig. 5, merely depicts a possible alteration of the shape and extent of the inlet opening I) of our preferred form illustrated in Fig. 1.

When the nozzle of the grease-gun which is used to fill the lubricator, closely fits the inlet opening 6 thereof, 'it'is necessary to provide an air-outlet or vent 6 as is shown in Figs. 1 and 2. This permits the escape I of the air which is displaced from the interior space upon the introduction of the grease or other lubricant. However, as a general rule, grease-gun nozzles are grooved upon their exterior so as to provide lateral airspaces, in which event the vent will .not be necessary. Inthe form of lubricator shown in Figs. 1 and 2, this vent would be located at the lower end of the exterior member B, so that such vent as well as the inlet opening 6 would be closed when the said member B is screwed down upon the mem-- her. A.

Having fully described our invention, what we claim and desire to secure by Letters Patent is 1. A lubricator comprising the combination with a threaded inner member provided. with an axial duct, of a complementa'rily threaded outer member movable thereabout and provided with a lateralfilling aperture, said aperture (adapted to be closed by such movement.

2. lubricator comprising the combination of an exteriorly threaded member provided with a duct, a complementary interiorlythreaded member movable thereabout and provided with an aperture, said aper ture adapted to be closed by such movement, means for impeding the movement in one direction one such member being provided with means for limiting the movement in the opposite direction.

An. outward pull on the projecting end 9'? against its own tension will cause the pin 3. A lubricator comp'risin the combination of an exteriorly threa ed member, a complementary interiorly threaded member movable relatively thereto," said interiorly threaded -member being, provided with an provided with an. inlet and an outlet open-- ing; one of said members having an outer thread and anmner recess with whlch said forming an interior.

outlet connects; the other of said members being cylindrical in form,ha.ving an open bottom, an interior thread adapted to engage said exterior thread, and a top forming, with the cylindrical'shell, an integral structure, one of said members having a bent portion lying in the path of movement of the other of said members, whereby the disengagement of said two members is prevented. v V a 5. A lubricator comprisingthe combination with a threaded interior member provided with an axial duct; of a supplementarily threaded outer membermovable about such interior member and provided with a lateral filling aperture adapted to be closed by such movement; such outer member being provided with an inwardly projecting portion lying in the path of relative movement of said interior member.

6. A lubricator comprising the combination of an interior member having an outer conical surface, an inner conical recess, and

" an outlet connected with the latter; andan outer member movable relatively 'to said inher member and forming with the latter an interior chamber for receiving a lubricant and provided with an inlet; -the said outer member having an open bottom, a top integral with the sides thereof, and an inwardly projecting portion adapted upon such relative movementto engage the conical outer surface of said interior member.

Signed by us, this'30th day of September, 1910.

s. o. CUTLER. WILLIAM H. BROWN.

Attested by- WINIFRED WALTZ, CURT B. MUELLER.

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